I've read older posts on changing the timing belts. Some recommend changing the tensioner regardless of their condition. I'll definitely get a manual before I attempt this. i haven't read any posts talking about using any special tools. Do I need anything that a back yard mechanic wouldn't already have? And anything other than timing I need to watch for or pay close attention to? Thanks

No special tools needed for the 1500. Use the how to section on the 1500 on this website, easy job on these bikes. As far as the tensioners, if money isn't an issue I would say change them. If you get the belts off and the bearings feel good in them you would probably be ok just reusing them. Really a judgement call. Don't replace them with used ones from the Internet, Cyclemax sells them for $70 each new. You won't find them at a better price anywhere . You can cross the oem belt numbers over to a gates and get them at a Napa parts store or any major parts house for much less than they sell them on the Internet.

On the right side (seated) gear will give a little kick when you release the belt. Don't let it scare you. You can screw a couple of lag bolts into a 2 x 4 to hold it in place. I think I've also used an extra long screwdriver to keep it from doing it too. Since you have to remove the radiator, you might as well replace the radiator fluid (with a coolant that is compatible with aluminum engines).